>
>
> And out of curiosity, if supply current is not an issue, does it do
> anything else that a pic does not do?  It looks like a low end pic could
> do this job but I don't know all the ins and outs.  For example, how
> would the two solutions compare over temperature as far as time-keeping
> drift?


It seems reasonable that the RTC chip would be optimized for low power, and
high accuracy in the oscillator.
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